Friday, July 2, 2010

Elaeacrinus verneuili Blastoid


Middle Devonian Period blastoid fossil called Elaeacrinus verneuili (Römer [aka Roemer], 1851). The pictures were taken in my cousin's workshop where he has been trying to extract this fossil from a large matrix piece.  So my lighting was fluorescent overhead so the images are a little blurry.

Fossil is about the size of a grape.

The blastoid is in Jeffersonville Limestone.


Thursday, July 1, 2010

Aulopora on Protoleptostrophia/Devonchonete Brachiopods


This image shows an Aulopora (Goldfuss, 1829) coral growing across the surface of a Protoleptostrophia perplana (Conrad, 1839) brachiopod.  It is surrounding quite a few Devonochonetes (Muir-Wood, 1962) brachiopods. The plate was found in the Silver Creek Member of the North Vernon Limestone.  Specimens found in Clark County, Indiana.  Fossil creatures shown existed in the Middle Devonian Period (Eifelian).  Need to figure out a way to clean the matrix out of the little horn shapes.

Next picture shows the plate before it was sandblasted.  You can see quite a few Aulopora (Goldfuss, 1829) corals and some of the brachiopod surface.


Here is another piece of Aulopora (Goldfuss, 1829) my cousin will be sandblasting in the near future.  The Silver Creek matrix is some of the best to abrasively clean.  I believe this layer is the one used to create cement with.

Wednesday, June 30, 2010

Aulopora on Protoleptostrophia Brachiopod


This image shows an Aulopora (Goldfuss, 1829) coral growing across the surface of a Protoleptostrophia perplana (Conrad, 1839) brachiopod.  Two other brachiopods shown in the top left are probably a Spinocyrtia or Devonochonetes. The plate was found in the Silver Creek Member of the North Vernon Limestone.  Specimens found in Clark County, Indiana.  Fossil creatures shown existed in the Middle Devonian Period (Eifelian).

Next picture shows the plate before it was sandblasted.  You can see a few Aulopora (Goldfuss, 1829) corals and part of a brachiopod.

This last picture shows the plate after sandblasting.  The cleaning was focused on the Aulopora (Goldfuss, 1829) coral growing on the brachiopod.